Cover assembly

ABSTRACT

A cover assembly can open a first cover and a second cover via a first elastic element, and close the first cover and the second cover via a second elastic element. The cover assembly can conveniently cover the first cover and the second cover on a base.

BACKGROUND

1. Technical Field

The present disclosure relates to a cover assembly.

2. Description of Related Art

To gain access to the internal hardware of an electronic device, to repair or replace parts for example, usually requires the use of a tool or tools to remove and then replace several fasteners, which is inconvenient.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an exploded, isometric view of an exemplary embodiment of a cover assembly, the cover assembly including a base, a first cover, and a second cover.

FIG. 2 is an isometric, inverted view of the second cover of FIG. 1.

FIG. 3 is a partially assembled, isometric view of FIG. 1, wherein the first cover is assembled to the base.

FIG. 4 is an assembled, isometric view of the cover assembly FIG. 1, but an inverted view.

FIG. 5 is are similar to FIG. 4, but showing a using state.

DETAILED DESCRIPTION

Referring to FIGS. 1, 2, and 4, an exemplary cover assembly 1 includes a base 10, a first cover 20, a second cover 30 engaged with the first cover 20, a shaft 40 used to pivotably connect the first cover 20 to the base 10, a torsion spring 50, and two extension springs 60 connected between the first cover 20 and the second cover 30.

A depressed portion 11 is defined in a top of the base 10, to receive the second cover 30. An opening 12 is defined in a bottom of the depressed portion 11, corresponding to the first cover 20. Two first blocks 13 extend from two opposite sidewalls bounding the opening 12. A bottom of each first block 13 forms a stopping surface 15. A top of each first block 13 forms an inclined sliding surface. A fixing portion 14 extends from an end of each of the two opposite sidewalls bounding the opening 12. Each of the fixing portions 14 defines a through hole 142.

A notch 21 is defined in a first side of the first cover 20. Two connection portions 22 are formed on the first side of the first cover 20 at opposite ends of the notch 21. A through hole 221 is axially defined in each connection portion 22. Two notches 23 are defined in a second side opposite to the first side of the first cover 20. Two substantially L-shaped hooks 24 extend down from the first cover 20 at ends bounding the corresponding notches 23.

The second cover 30 includes a board 31, two parallel first walls 32 perpendicularly extending down from opposite ends of a bottom of the board 31, and a second wall 33 perpendicularly extending down from a side of the bottom of the board 31. The second wall 33 is perpendicularly connected between corresponding ends of the two first walls 32. A recess 39 is defined in a top portion of the board 31 to provide convenient access to operate the second cover 30. A rib 34 is formed on an inside surface of each first wall 32 facing the other first wall 32. A sliding slot 35 is formed between each rib 34 and the bottom of the board 31 to receive opposite sides of the first cover 20. Two second blocks 36 extend from an outside surface opposite to the inside surface of each first wall 32, corresponding to the first blocks 13. A bottom of each second block 36 forms an inclined sliding surface. A top of each second block 36 forms a stopping surface 38. Two protrusions 37 extend down from a bottom of the second wall 33. A hole 372 is defined in each protrusion 37.

Referring to FIGS. 3, 4, and 5, in assembly, the first cover 20 is pivotably connected to the base 10 via the shaft 40 passing through the through hole 221 of one connection portion 22, the torsion spring 50, and the through hole 221 of the other connection portion 22. The torsion spring 50 is received in the notch 21. A first end of the torsion spring 50 abuts against the bottom of the first cover 20. A second end of the torsion spring 50 abuts against the bottom of the base 10. The first cover 20 is pivoted up and out of the base 10. The second cover 30 is attached to the first cover 20, with opposite ends of the first cover 20 sliding into the corresponding sliding slots 35 of the second cover 30. Therefore, the second cover 30 covers the first cover 20. Opposite ends of each extension spring 60 are engaged with a corresponding hook 24 and a corresponding hole 372.

When the first cover 20 and the second cover 30 need to be closed, the first cover 20 and the second cover 30 are rotated towards the opening 12 of the base 10. The torsion spring 50 is deformed. The second cover 30 is pushed away from the shaft 40 and pressed down. The extension springs 60 are deformed. The second blocks 36 of the second cover 30 touch the corresponding first blocks 13 of the base 10. The sliding surfaces of the second blocks 36 slide along the sliding surfaces of the corresponding first blocks 13, until the second blocks 36 are staggered with the corresponding first blocks 13. The second cover 30 moves back towards the shaft 40 under force of restoration of the extension springs 60. The stopping surfaces 38 of the second blocks 36 engage with the stopping surfaces 15 of the first blocks 13 under restoration force of the torsion spring 50. Therefore, the first cover 20 and second cover 30 are received in the depressed portion 11 of the base 10.

When the first cover 20 and the second cover 30 are opened from the base 10 via the second cover 30 being operated up on the recess 39, the extension springs 60 are stretched. The stopping surfaces 38 of the second blocks 36 disengage from the stopping surfaces 15 of the corresponding first blocks 13. The sliding surfaces of the second blocks 36 slide long the sliding surfaces of the corresponding first blocks 13 under restoration force of the extension springs 60, and the first and second covers 20 and 30 rotate towards the outside of the base 10 under restoration force of the torsion spring 50.

It is to be understood, however, that even though numerous characteristics and advantages of the embodiments have been set forth in the foregoing description, together with details of the structure and function of the embodiments, the disclosure is illustrative only, and changes may be made in details, especially in matters of shape, size, and arrangement of parts within the principles of the embodiments to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed. 

1. A cover assembly comprising: a base defining an opening, a plurality of first blocks extending from two opposite first sidewalls bounding the opening; a first cover rotatably mounted to a second sidewall bounding the opening of the base and perpendicularly connected between the first sidewalls; a second cover slidably covering the first cover, a plurality of second blocks corresponding to the plurality of first blocks extending from two opposite ends of the second cover; a first elastic element connected to the first cover and the base to restore the first cover to open the first cover from the base; a second elastic element connected to the first cover and the second cover to restore the second cover towards the second sidewall bounding the opening.
 2. The cover assembly of claim 1, wherein a first notch is defined in a first side of the first cover, two connection portions are formed on the first side of the first cover at opposite ends of the notch, a through hole is defined in each connection portion, to allow a shaft to pass through to rotatably mount the first cover to the base.
 3. The cover assembly of claim 2, wherein the first elastic element is a torsion spring, the torsion spring fits about the shaft and is received in the first notch, a first end of the torsion spring abuts against the first cover, a second end of the torsion spring abuts against the base.
 4. The cover assembly of claim 1, wherein each of the plurality of first blocks comprises a first sliding surface and a first stopping surface, each of the second blocks comprises a second sliding surface corresponding to the first sliding surface of the corresponding first block and a second stopping surface corresponding to the stopping surface of the corresponding first block.
 5. The cover assembly of claim 1, wherein the second cover comprises a board, two first walls extending down from opposite ends of the board, a rib is formed on inside surface of each first wall, a sliding slot is defined between each rib and the bottom of the board, to receive opposite ends of the first cover.
 6. The cover assembly of claim 5, wherein a recess is defined in a top portion of the board to provide convenient access to operate the second cover.
 7. The cover assembly of claim 5, wherein the second elastic element is an extension spring, a hook is formed on a bottom of the first cover, a protrusion is mounted on the bottom of the second cover, a hole is defined in the protrusion, a first end of the extension spring is connected to the hook, a second end opposite to the first end of the extension spring is engaged in the hole of the protrusion. 